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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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116
nsprpub/pr/tests/primblok.c Normal file
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* File: primblok.c
* Purpose: testing whether the primordial thread can block in a
* native blocking function without affecting the correct
* functioning of NSPR I/O functions (Bugzilla bug #30746)
*/
#if !defined(WINNT)
#include <stdio.h>
int main(int argc, char **argv)
{
printf("This test is not relevant on this platform\n");
return 0;
}
#else /* WINNT */
#include "nspr.h"
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define TEST_FILE_NAME "primblok.dat"
/* use InterlockedExchange to update this variable */
static LONG iothread_done;
static void PR_CALLBACK IOThread(void *arg)
{
PRFileDesc *fd;
char buf[32];
PRInt32 nbytes;
/* Give the primordial thread one second to block */
Sleep(1000);
/*
* See if our PR_Write call will hang when the primordial
* thread is blocking in a native blocking function.
*/
fd = PR_Open(TEST_FILE_NAME, PR_WRONLY|PR_CREATE_FILE, 0666);
if (NULL == fd) {
fprintf(stderr, "PR_Open failed\n");
exit(1);
}
memset(buf, 0xaf, sizeof(buf));
fprintf(stderr, "iothread: calling PR_Write\n");
nbytes = PR_Write(fd, buf, sizeof(buf));
fprintf(stderr, "iothread: PR_Write returned\n");
if (nbytes != sizeof(buf)) {
fprintf(stderr, "PR_Write returned %d\n", nbytes);
exit(1);
}
if (PR_Close(fd) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
if (PR_Delete(TEST_FILE_NAME) == PR_FAILURE) {
fprintf(stderr, "PR_Delete failed\n");
exit(1);
}
/* Tell the main thread that we are done */
InterlockedExchange(&iothread_done, 1);
}
int main(int argc, char **argv)
{
PRThread *iothread;
/* Must be a global thread */
iothread = PR_CreateThread(
PR_USER_THREAD, IOThread, NULL, PR_PRIORITY_NORMAL,
PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
if (iothread == NULL) {
fprintf(stderr, "cannot create thread\n");
exit(1);
}
/*
* Block in a native blocking function.
* Give iothread 5 seconds to finish its task.
*/
Sleep(5000);
/*
* Is iothread done or is it hung?
*
* I'm actually only interested in reading the value
* of iothread_done. I'm using InterlockedExchange as
* a thread-safe way to read iothread_done.
*/
if (InterlockedExchange(&iothread_done, 1) == 0) {
fprintf(stderr, "iothread is hung\n");
fprintf(stderr, "FAILED\n");
exit(1);
}
if (PR_JoinThread(iothread) == PR_FAILURE) {
fprintf(stderr, "PR_JoinThread failed\n");
exit(1);
}
printf("PASSED\n");
return 0;
} /* main */
#endif /* WINNT */